EP0407848A2 - Abgleichschaltung und -verfahren, das eine solche Abgleichschaltung verwendet - Google Patents

Abgleichschaltung und -verfahren, das eine solche Abgleichschaltung verwendet Download PDF

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Publication number
EP0407848A2
EP0407848A2 EP90112566A EP90112566A EP0407848A2 EP 0407848 A2 EP0407848 A2 EP 0407848A2 EP 90112566 A EP90112566 A EP 90112566A EP 90112566 A EP90112566 A EP 90112566A EP 0407848 A2 EP0407848 A2 EP 0407848A2
Authority
EP
European Patent Office
Prior art keywords
subcomponents
value
trimming circuit
trimming
field
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP90112566A
Other languages
English (en)
French (fr)
Other versions
EP0407848B1 (de
EP0407848A3 (en
Inventor
Wolfgang Dr. Steinhagen
Ulrich Kaiser
Michael C. Dr. Smayling
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Texas Instruments Deutschland GmbH
Original Assignee
Texas Instruments Deutschland GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Texas Instruments Deutschland GmbH filed Critical Texas Instruments Deutschland GmbH
Publication of EP0407848A2 publication Critical patent/EP0407848A2/de
Publication of EP0407848A3 publication Critical patent/EP0407848A3/en
Application granted granted Critical
Publication of EP0407848B1 publication Critical patent/EP0407848B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
    • G06K19/0726—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs the arrangement including a circuit for tuning the resonance frequency of an antenna on the record carrier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H3/00—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J2200/00—Indexing scheme relating to tuning resonant circuits and selecting resonant circuits
    • H03J2200/10—Tuning of a resonator by means of digitally controlled capacitor bank

Definitions

  • the invention relates to a trimming circuit for setting a desired value of an electrical component and a method for adjusting an electrical parameter of an assembly by connect­ing an electrical component with adjustable value using such an integrated trimming circuit.
  • the adjustable com­ponent is set to a value which in cooperation with the assembly to be adjusted sets an electrical parameter to a desired value in said assembly.
  • the assembly to be adjusted may be the resonant circuit of a transmitter output stage with which for the purpose of the adjusting a trimming capacitor is connected in parallel which in the balancing operation is set to a value such that a desired resonant frequency of the resonant circuit is achieved.
  • the exact balancing is of great importance in particular when with a small transmitting power a relatively large range is to be achieved, i.e. an optimum energy irradiation.
  • connection of external components to the assembly to be adjusted is undesirable when the smallest possible space requirement is desired which can only be satisfied when if possible all the components are accommodated in an integrated circuit. Also, connection of external components usually re­quires the adjusting operation to be carried out by means of mechanical interventions which is time-consuming and therefore undesirable.
  • the invention is based on the problem of providing a trimm­ing circuit of the type mentioned at the beginning which can be made in the form of an integrated circuit and in which the value of the component to be connected to an external assembly for an adjusting or balancing operation can be set solely by applying electrical signals. Furthermore, a trimming method is to be provided with the aid of which by using the trimming circuit to be provided an electrical parameter of an assembly can be set in simple manner to a desired value.
  • the trimming circuit according to the invention is characterized in that the com­ponent is made up of a plurality of subcomponents which are connected in parallel with each other and the values of which are in a predetermined relationship to each other and that into a supply line to each subcomponent at least one elec­trically programmable field-effect transistor is inserted which via a control gate terminal can be put permanently into a conductive state or a nonconductive state.
  • the trimming method according to the invention is characterized in that into each supply line to a sub­component a further electrically programmable field-effect transistor is inserted.
  • An alternative solution of the trimming method according to the invention resides in that in the trimming circuit all the subcomponents and the refer­ence component are rendered effective in that the field-effect transistors inserted into their supply lines are put into the conductive state, that the trimming circuit is connected to the assembly and the actual value of the electrical para­meter to be adjusted and the deviation thereof from a desired value are determined, that the reference component is rendered ineffective by blocking the field-effect trans­istor inserted into the supply line thereof, that the change of the electrical parameter of the assembly caused by render­ing the reference component ineffective is measured, that from the measurement result the magnitude of the value of the subcomponents which is to be rendered effective to change the electrical parameter of the assembly to be adjusted from the actual value to the desired value is cal­culated and that the field-effect transistors are blocked in as many supply lines to the subcomponents as is necess
  • the sub­components forming the component are integrated into a semi­conductor substrate which also contains the electrically programmable field-effect transistors.
  • the subcomponents can be specifically rendered effective and in­effective so that the total value of the subcomponents can thereby be set.
  • the component made up of the subcomponents rendered effective then effects the setting of an electri­cal parameter to the desired value in the connected assembly.
  • the trimming method according to the invention permits an exact and rapidly performable trimming operation using the trimming circuit according to the invention; the use of the reference component makes it possible to compensate process influences on the values of the subcomponents which can fluctuate as regards their exact values.
  • the trimming circuit 10 illustrated in the drawing is part of an integrated circuit 12 which is shown schematically in the drawing by a dashed outline.
  • the integrated circuit 12 is for example the output stage of a low power transmitter in a transponder which is part of an identification system in which objects to be identified are each provided with their own transponder which can be activated with the aid of an interrogation device and stimulated to transmit an identification code group.
  • a resonant circuit 14 Connected to the integrated circuit 12 is a resonant circuit 14 comprising a coil 16 and two capacitors 18, 20.
  • the coil 16 forms an antenna coil which irradiates the signal to be transmitted.
  • the resonant frequency of the resonant circuit 14 must be adapted as exactly as possible to the transmitted frequency. This can be achieved with the trimming circuit 10.
  • the trimming circuit 10 includes a plurality of integrated capacitors 22.1 - 22.n which as subcomponents together form a component which is connected to the resonant circuit 14 for adjusting the resonant frequency thereof.
  • the capacitor 24 is a subcomponent like the capacitors 22.1 - 22.n but serves a special purpose which will be explained hereinafter.
  • a field-effect transistor 26.1 - 26.n, 28 is inserted into each supply line or lead to each of the capacitors 22.1 ­22.n and 24.
  • These field-effect transistors are electrically programmable field-effect transistors, i.e. field-effect transistors which by applying a corresponding control signal to their control gate terminal can be put either into the nonconductive state or into the conductive state.
  • Said transistors include a non-connected gate electrode which is referred to in English technical usage as "floating gate”. The mode of operation of such transistors is generally known and need not be explained in detail here.
  • the capacitors 22.1 - 22.n are binarily weighted.
  • a first step of the adjusting method the resonant fre­quency with which the resonant circuit 14 oscillates when all the transistors of the trimming circuit 10 are effected are measured.
  • the capacitor 24 is first rendered ineffective by blocking the field-effect transistor 28 contained in its supply line.
  • said capacitor 24 as regards its capacitance is in a fixed ratio to the capacitor 22.1; its capacitance is 8 times as great as the capacitance of the capacitor 22.1.
  • Rendering the capacitor 24 ineffect­ive leads to a change of the resonant frequency of the reson­ant circuit 14, i.e. to an increase because the total capa­citance which lies in parallel to the resonant circuit 14 is reduced.
  • From the simple oscillation equation of the resonant circuit 14 it is possible to calculate from the change resulting from disconnection of the capacitor 24 the capacitance change which is necessary for changing the resonant frequency of the resonant circuit 14 from the actual value to the desired value. The calculation can for example show that a change of 65C is necessary to give the desired frequency change.
  • the resonant frequency of the resonant circuit 14 without parallel connection of the capacitors of the trimming circuit is under all circumstances higher than the desired frequency to be achieved. With the aid of the trimming circuit the resonant frequency can then be reduced until the desired frequency is reached.
  • the trimming circuit described may contain instead of the capacitors 22.1 - 22.n and 24 resis­tors which can be rendered effective or ineffective to adjust an assembly in which the adjustment can be achieved by parallel connection of a specific resistance.
  • the trimming process would then take place exactly as outlined above in the case of adjusting the resonant frequency of the reson­ant circuit 14.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Design And Manufacture Of Integrated Circuits (AREA)
  • Semiconductor Integrated Circuits (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Stereophonic System (AREA)
  • Electrotherapy Devices (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Apparatuses And Processes For Manufacturing Resistors (AREA)
  • Manufacturing Of Printed Wiring (AREA)
  • Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
  • Non-Volatile Memory (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
EP90112566A 1989-07-12 1990-07-02 Abgleichverfahren Expired - Lifetime EP0407848B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3922977 1989-07-12
DE3922977A DE3922977A1 (de) 1989-07-12 1989-07-12 Trimmschaltung und unter verwendung einer solchen trimmschaltung ausfuehrbares abgleichverfahren

Publications (3)

Publication Number Publication Date
EP0407848A2 true EP0407848A2 (de) 1991-01-16
EP0407848A3 EP0407848A3 (en) 1991-04-03
EP0407848B1 EP0407848B1 (de) 1999-06-09

Family

ID=6384853

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90112566A Expired - Lifetime EP0407848B1 (de) 1989-07-12 1990-07-02 Abgleichverfahren

Country Status (8)

Country Link
EP (1) EP0407848B1 (de)
JP (1) JPH03136364A (de)
AT (1) ATE181191T1 (de)
AU (1) AU626692B2 (de)
CA (1) CA2019921A1 (de)
DE (2) DE3922977A1 (de)
DK (1) DK0407848T3 (de)
NZ (1) NZ234161A (de)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0663747A1 (de) * 1993-12-03 1995-07-19 Texas Instruments Incorporated Selbsteinstellender Empfänger/Dekodierer für Radiofrequenzdatenübertragung mittels Frequenzumtastung
EP0771070A2 (de) * 1995-10-27 1997-05-02 Mitsubishi Denki Kabushiki Kaisha Dünnfilmanordnung mit akustischen Volumenwellen
US5789845A (en) * 1994-11-24 1998-08-04 Mitsubishi Denki Kabushiki Kaisha Film bulk acoustic wave device
US5892300A (en) * 1994-10-26 1999-04-06 Siemens Aktiengesellschaft System for contactless power and data transmission
WO2006053098A1 (en) * 2004-11-08 2006-05-18 Elder J Scott Method and apparatus for calibrating analog circuits using statistical techniques
FR2914087A1 (fr) * 2007-03-22 2008-09-26 Microcomposants De Haute Secur Procede de fabrication de radio-etiquette
US8890633B2 (en) 2012-12-18 2014-11-18 Nxp B.V. Resonant circuit with automated trimming capabilities
WO2015000818A1 (de) * 2013-07-03 2015-01-08 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und verfahren zum anpassen eines schwingkreises für ein spielgerät
WO2021133651A1 (en) * 2019-12-28 2021-07-01 Avery Dennison Retail Information Services, Llc Tuning assemblies for rfid chips
US11736959B2 (en) 2006-11-18 2023-08-22 Rfmicron, Inc. Radio frequency (RF) field strength detecting circuit
US11817637B2 (en) 2006-11-18 2023-11-14 Rfmicron, Inc. Radio frequency identification (RFID) moisture tag(s) and sensors with extended sensing via capillaries
US11831351B2 (en) 2006-11-18 2023-11-28 Rfmicron, Inc. Computing device for processing environmental sensed conditions
US12073272B2 (en) 2006-11-18 2024-08-27 Rfmicron, Inc. Generating a response by a radio frequency identification (RFID) tag within a field strength shell of interest
US12099028B2 (en) 2014-10-08 2024-09-24 Rfmicron, Inc. Wireless sensor with multiple sensing options

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4404265C3 (de) * 1994-02-10 2001-02-15 Siemens Ag Verfahren zur Herstellung einer kalibrierten Sensoreinheit
DE10002311C1 (de) 2000-01-20 2001-06-13 Skidata Ag Kommunikationsendgerät
DE60133755T2 (de) * 2000-08-15 2009-05-14 Omron Corp. Kontaktloses kommunikationsmedium und -system
DE10151856A1 (de) * 2001-10-24 2003-05-15 Zentr Mikroelekt Dresden Gmbh Verfahren zum Selbstabgleich eines Resonanzschaltkreises
JP2007005778A (ja) * 2005-05-27 2007-01-11 Semiconductor Energy Lab Co Ltd 半導体装置
ES2326298B1 (es) 2006-11-27 2010-07-05 Datamars, S.A. Dispositivo electronico para la identificacion por radio frecuencia y metodo para el ajuste de la frecuencia de resonancia de dicho dispositivo electronico.
EP3346611B1 (de) * 2008-02-28 2021-09-22 pSemi Corporation Verfahren und vorrichtung für digitale abstimmung eines kondensators bei einer integrierten schaltung
KR101350461B1 (ko) 2012-04-03 2014-01-09 주식회사 하이딥 튜너블 커패시터

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54134546A (en) * 1978-04-10 1979-10-19 Nippon Telegr & Teleph Corp <Ntt> Digital-analogue converter
FR2591753A1 (fr) * 1985-12-16 1987-06-19 Crystal Semiconductor Corp Procede d'auto-etalonnage pour des condensateurs dans un circuit integre monolithique
JPS6386269A (ja) * 1986-09-29 1988-04-16 Fuji Electric Co Ltd 燃料電池の出力電圧、電流の調整方法
JPS63116505A (ja) * 1986-11-04 1988-05-20 Seiko Epson Corp Ｃｒ発振器

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3799198A (en) * 1972-01-27 1974-03-26 Aiden Kk Electronic automatic faucet device
US3803429A (en) * 1972-11-07 1974-04-09 Motorola Inc Switchable frequency tone filter and detector with high speed switching capability

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54134546A (en) * 1978-04-10 1979-10-19 Nippon Telegr & Teleph Corp <Ntt> Digital-analogue converter
FR2591753A1 (fr) * 1985-12-16 1987-06-19 Crystal Semiconductor Corp Procede d'auto-etalonnage pour des condensateurs dans un circuit integre monolithique
JPS6386269A (ja) * 1986-09-29 1988-04-16 Fuji Electric Co Ltd 燃料電池の出力電圧、電流の調整方法
JPS63116505A (ja) * 1986-11-04 1988-05-20 Seiko Epson Corp Ｃｒ発振器

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 12, no. 320 (E-651), 30th August 1988; & JP-A-63 086 269 (FUJI) 16-04-1988 *
PATENT ABSTRACTS OF JAPAN, vol. 12, no. 362 (E-663), 28th September 1988; & JP-A-63 116 505 (SEIKO) 20-05-1988 *

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0663747A1 (de) * 1993-12-03 1995-07-19 Texas Instruments Incorporated Selbsteinstellender Empfänger/Dekodierer für Radiofrequenzdatenübertragung mittels Frequenzumtastung
US5892300A (en) * 1994-10-26 1999-04-06 Siemens Aktiengesellschaft System for contactless power and data transmission
US5789845A (en) * 1994-11-24 1998-08-04 Mitsubishi Denki Kabushiki Kaisha Film bulk acoustic wave device
EP0771070A2 (de) * 1995-10-27 1997-05-02 Mitsubishi Denki Kabushiki Kaisha Dünnfilmanordnung mit akustischen Volumenwellen
EP0771070A3 (de) * 1995-10-27 1997-07-02 Mitsubishi Electric Corp Dünnfilmanordnung mit akustischen Volumenwellen
WO2006053098A1 (en) * 2004-11-08 2006-05-18 Elder J Scott Method and apparatus for calibrating analog circuits using statistical techniques
US7358809B2 (en) 2004-11-08 2008-04-15 Elder J Scott Method for forming elements with reduced variation
US11736959B2 (en) 2006-11-18 2023-08-22 Rfmicron, Inc. Radio frequency (RF) field strength detecting circuit
US12073272B2 (en) 2006-11-18 2024-08-27 Rfmicron, Inc. Generating a response by a radio frequency identification (RFID) tag within a field strength shell of interest
US11831351B2 (en) 2006-11-18 2023-11-28 Rfmicron, Inc. Computing device for processing environmental sensed conditions
US11817637B2 (en) 2006-11-18 2023-11-14 Rfmicron, Inc. Radio frequency identification (RFID) moisture tag(s) and sensors with extended sensing via capillaries
WO2008132379A2 (fr) * 2007-03-22 2008-11-06 Microcomposants Haute Sécurité Mhs Procédé de fabrication de radio-étiquette
WO2008132379A3 (fr) * 2007-03-22 2008-12-24 Microcomposants Haute Securite Procédé de fabrication de radio-étiquette
FR2914087A1 (fr) * 2007-03-22 2008-09-26 Microcomposants De Haute Secur Procede de fabrication de radio-etiquette
US8890633B2 (en) 2012-12-18 2014-11-18 Nxp B.V. Resonant circuit with automated trimming capabilities
WO2015000818A1 (de) * 2013-07-03 2015-01-08 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und verfahren zum anpassen eines schwingkreises für ein spielgerät
US12099028B2 (en) 2014-10-08 2024-09-24 Rfmicron, Inc. Wireless sensor with multiple sensing options
WO2021133651A1 (en) * 2019-12-28 2021-07-01 Avery Dennison Retail Information Services, Llc Tuning assemblies for rfid chips
US12056553B2 (en) 2019-12-28 2024-08-06 Avery Dennison Retail Information Services Llc Tuning assemblies for RFID chips

Also Published As

Publication number Publication date
CA2019921A1 (en) 1991-01-12
EP0407848B1 (de) 1999-06-09
DE69033154D1 (de) 1999-07-15
DE3922977C2 (de) 1992-04-30
AU5767290A (en) 1991-01-17
DE69033154T2 (de) 1999-10-28
NZ234161A (en) 1992-07-28
DE3922977A1 (de) 1991-01-24
ATE181191T1 (de) 1999-06-15
AU626692B2 (en) 1992-08-06
JPH03136364A (ja) 1991-06-11
EP0407848A3 (en) 1991-04-03
DK0407848T3 (da) 1999-11-15

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